Weather

> Sonservant
> Science

Current Surface Analysis in United States. The Current Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions, satellite infrared (IR) cloud cover, and areas of precipitation.

A surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations. Weather maps are created by plotting or tracing the values of relevant quantities such as sea level pressure, temperature, and cloud cover onto a geographical map to help find synoptic scale features such as weather fronts. The first weather maps in the 19th century were drawn well after the fact to help devise a theory on storm systems. After the advent of the telegraph, simultaneous surface weather observations became possible for the first time, and beginning in the late 1840s, the Smithsonian Institution became the first organization to draw real-time surface analyses.

_meterological basics. Home Page - NOAA Satellites Portal. When you watch the news and see pictures of weather from around the United States or the world, you are seeing data from NOAA’s environmental satellites.

NOAA’s environmental satellites provide data from space to monitor the Earth to analyze the coastal waters, relay life-saving emergency beacons, and track tropical storms and hurricanes. NOAA operates two types of satellite systems for the United States - geostationary satellites and polar-orbiting satellites. Geostationary satellites constantly monitor the Western Hemisphere from around 22,240 miles above the Earth, and polar-orbiting satellites circle the Earth and provide global information from 540 miles above the Earth.
NOAA Home Page. HPC North American Surface Analyses. NOAA_7-Day Forecast for Latitude 40.45N and Longitude -74.19W.